High damage threshold mirrors are necessary in high power laser systems. Different factors influence the rate of laser damage of these types of mirrors. In this research, the first thing that we tried was to simulate mirrors that are suitable for the reflectance spectra and are also in possession of high theoretically laser damage threshold at 10600 nm. After the task of simulation, the fabrication and coating process was performed by physical evaporation and in order to check the reflectance of the samples, their reflectance spectra were taken by uv-visible spectroscopy and their reflectance at 10600 nm is more than 99.5%. Finally, by measuring the thresholds of laser damage of mirrors made with continuous CO2 lasers, we came to the conclusion that the all-dielectric mirror with ZnS substrate has the highest laser induced damage threshold.
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